Limited benefit plans are FSA designs that cover only specific categories of care, not medical expenses across the board

A limited benefit plan restricts what your FSA money can pay for. Instead of covering any may have access to medical expense, it covers only certain types — usually dental, vision, or both. The IRS sets which expense categories may have access to, and your employer chooses which ones their plan includes.

The opposite is a general-purpose FSA, which covers the full range of IRS-approved medical expenses: doctor visits, prescriptions, mental health care, medical equipment, and hundreds of other things. If your FSA covers everything on the IRS list, it is not a limited benefit plan.

Why this matters: limited benefit plans have different rules for what happens to unused money at year-end. A general-purpose FSA follows the standard use-it-or-lose-it rule — money you do not spend by December 31 is forfeited. A limited benefit plan may allow you to carry unused funds forward to the next year, depending on your employer's plan design.

Key Takeaways

  • A limited benefit plan covers only specific expense categories — most commonly dental and vision — while a general-purpose FSA covers all IRS-approved medical expenses.
  • The IRS defines which expense types exist; your employer decides which ones their FSA will cover.
  • Limited benefit plans often allow unused money to roll over to the next year, whereas general-purpose FSAs typically follow use-it-or-lose-it rules.
  • Your plan documents or summary of benefits will state exactly which expense categories your FSA covers.

Common limited benefit plan types

Dental-only FSAs cover teeth and mouth care: cleanings, fillings, root canals, orthodontia, dentures, and related expenses. They do not cover medical or vision expenses. Some employers offer these as a standalone account separate from any general medical FSA.

Vision-only FSAs cover eye care: exams, glasses, contact lenses, and lens solutions. They do not cover dental or general medical expenses. Like dental-only plans, these sometimes exist as a separate account.

Dental and vision combined FSAs cover both categories but nothing else — no doctor visits, prescriptions, or other medical costs. This is still a limited benefit plan because it excludes the broader medical category.

Some employers offer a general-purpose FSA alongside a separate limited benefit FSA. For example, you might have a medical FSA that covers doctor visits and prescriptions, plus a separate dental FSA. Each account has its own contribution limit and its own rules about unused money.

How the IRS defines limited benefit plans

The IRS groups medical expenses into categories. A plan is limited if it covers only one or more of these categories but not all of them. The main categories are: medical (doctor, hospital, prescription), dental, vision, and long-term care.

Within each category, the IRS has a detailed list of what counts. For example, dental includes preventive care, basic restorative work, and major restorative work. Vision includes exams, glasses, and contact lenses. If your plan covers the full dental list but nothing else, it is a limited benefit plan.

A general-purpose FSA does not have to cover every single IRS-approved expense — an employer can exclude certain items. However, if a plan covers expenses across multiple categories (medical plus dental, for instance), it is still considered general-purpose, not limited. The distinction hinges on breadth across categories, not on whether every single expense is included.

Unused money rules: where limited benefit plans differ

The biggest practical difference between limited and general-purpose FSAs is what happens to money you do not spend. General-purpose FSAs almost always follow the use-it-or-lose-it rule: any balance left on December 31 is forfeited, with a small grace period or carryover option allowed only if your employer's plan specifically permits it.

Limited benefit plans have more flexibility. The IRS allows limited benefit plans to let you carry over unused funds to the next year without losing them. This is not required — your employer can still impose use-it-or-lose-it — but it is permitted. Check your plan documents or summary of benefits to see whether your limited benefit plan allows carryover.

This carryover option is one reason some people prefer limited benefit plans: if you contribute to a dental FSA and do not need all the money in a given year, you may be able to use it the following year instead of losing it. However, not every employer offers this, so you must verify with your plan administrator.

How to find out what type of FSA you have

Your employer or plan administrator should provide a document called a Summary of Benefits and Coverage or a plan summary. This document lists which expense categories your FSA covers. If it covers medical, dental, and vision, you have a general-purpose FSA. If it covers only dental, only vision, or dental and vision together, you have a limited benefit plan.

You can also ask your benefits department directly: "Is my FSA a limited benefit plan, or does it cover all may have access to medical expenses?" They will tell you which categories are included and what happens to unused money at year-end.

If you have multiple FSA accounts — for example, a medical FSA and a separate dental FSA — each one is evaluated separately. Your medical FSA is general-purpose; your dental FSA is limited. The rules for unused money may differ between them.

Frequently Asked Questions

Can I have both a limited benefit FSA and a general-purpose FSA at the same time?

Yes. Many employers offer a general medical FSA plus a separate dental or vision FSA. Each account has its own contribution limit and its own rules about unused money. You contribute to each separately and use each for its designated expense category.

If my limited benefit plan allows carryover, do I lose the money after that?

That depends on your plan. Some plans allow one year of carryover and then impose use-it-or-lose-it on the carried-over amount. Others allow indefinite carryover. Your plan documents will specify. Ask your benefits department if you are unsure.

Does a limited benefit plan have a lower contribution limit than a general-purpose FSA?

No. The IRS sets annual contribution limits for FSAs overall, and they are the same regardless of whether your plan is limited or general-purpose. However, if you have separate accounts — a medical FSA and a dental FSA — the combined total across all your FSAs cannot exceed the annual limit.

If I switch jobs, can I take my limited benefit FSA balance with me?

No. FSA balances do not transfer between employers. When you leave your job, you lose any unused FSA money, even if your old plan allowed carryover. You can use COBRA to continue your FSA for a limited time, but the balance itself stays with your former employer's plan.

Are prescription glasses covered under a vision-only limited benefit plan?

Yes. Vision-only FSAs cover eyeglasses, contact lenses, lens solutions, and eye exams. However, they do not cover medical eye conditions like glaucoma treatment or eye surgery — those fall under the medical category and would need a general medical FSA.